Hi Sasha, take a look at section 7.5 at about pg 57 at FLUX BEAMBOX USER MANUAL Pdf Download | ManualsLib
Manuals are a moving target and have not been static for a while. My original manual (years ago) simply said fill the tank (encouraged distilled water) and to keep the tank full. A later manual informed that the maintenance panel has a water pump function and it appeared one could manually run the pump to remove the air (collects in the top of the water tank) in the system as the water circulated so that you didn’t fill it, run it, and find out it was only 2/3rds full (and therefore overheat). Given the caution about air in the system I’ve always checked my tank at every use and seldom do I find it one or two teaspoons down even after several hours of use. That said, I still check it each time I use it and at about every two hours while in use.
You are right… only way to know its status Is to remove the fill cap and observe the water level. Since I never let it go down I can always see the level with regular room light. Of course, that requires getting it completely full in the first place. But since I’m using the water pump and not the laser I don’t have overheating issues while I’m topping off the tank.
Really wish there was an observation port… or a gauge. Silly to not h have it given the importance of the water level. To ease the pain I attached a small but strong magnet to the tip of my screwdriver and glued a steel washer with a large center hole over the fill cap. When I unscrew the fill cap through the washer hole the fill cap and washer comes out with the screw driver. I use a water bottle with a side spout fed from the bottom so a small squeeze forces water up the spout and into the fill tube. Benefit… if I over fill I just release pressure on the side of the bottle and it sucks up the extra water. A quick wipe with a towel after replacing the cap and I’m ready to roll.
NOTE: current manual instructions require you to drain and refill the water tank every 3 months. My water, even though it does go down very slowly, appears to stay clean/pure. If you do drain/refill… be sure to chase all the water bubbles out and have a full water tank before you start heating up the laser to high levels.
Hope this helps and remember… I’ma newbie and have no special background other than hard earned experience and some reading to inform how I approach the Beambox Pro.
